syzkaller login: [ 296.955946][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 297.047245][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 344.413489][ T1858] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:3131' (ECDSA) to the list of known hosts. 1970/01/01 00:06:21 fuzzer started 1970/01/01 00:06:37 dialing manager at localhost:43933 [ 404.232609][ T2050] cgroup: Unknown subsys name 'net' [ 405.313488][ T2050] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:06:45 syscalls: 2818 1970/01/01 00:06:45 code coverage: enabled 1970/01/01 00:06:45 comparison tracing: enabled 1970/01/01 00:06:45 extra coverage: enabled 1970/01/01 00:06:45 delay kcov mmap: mmap returned an invalid pointer 1970/01/01 00:06:45 setuid sandbox: enabled 1970/01/01 00:06:45 namespace sandbox: enabled 1970/01/01 00:06:45 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:06:45 fault injection: enabled 1970/01/01 00:06:45 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:06:45 net packet injection: enabled 1970/01/01 00:06:45 net device setup: enabled 1970/01/01 00:06:45 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:06:45 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:06:45 USB emulation: enabled 1970/01/01 00:06:45 hci packet injection: /dev/vhci does not exist 1970/01/01 00:06:45 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:06:45 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 1970/01/01 00:06:45 fetching corpus: 0, signal 0/2000 (executing program) 1970/01/01 00:06:51 fetching corpus: 50, signal 32094/35590 (executing program) 1970/01/01 00:06:54 fetching corpus: 100, signal 41906/46950 (executing program) 1970/01/01 00:06:58 fetching corpus: 150, signal 50598/57030 (executing program) 1970/01/01 00:07:01 fetching corpus: 200, signal 59467/67129 (executing program) 1970/01/01 00:07:05 fetching corpus: 250, signal 64812/73739 (executing program) 1970/01/01 00:07:08 fetching corpus: 299, signal 70760/80895 (executing program) 1970/01/01 00:07:10 fetching corpus: 348, signal 75651/86925 (executing program) 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signal 249178/257448 (executing program) 1970/01/01 00:18:45 fetching corpus: 11636, signal 249511/257448 (executing program) 1970/01/01 00:18:48 fetching corpus: 11686, signal 249796/257448 (executing program) 1970/01/01 00:18:51 fetching corpus: 11736, signal 250078/257448 (executing program) 1970/01/01 00:18:54 fetching corpus: 11786, signal 250373/257448 (executing program) 1970/01/01 00:18:57 fetching corpus: 11836, signal 250788/257455 (executing program) 1970/01/01 00:18:59 fetching corpus: 11886, signal 251066/257455 (executing program) 1970/01/01 00:19:01 fetching corpus: 11936, signal 251372/257455 (executing program) 1970/01/01 00:19:04 fetching corpus: 11986, signal 251713/257455 (executing program) 1970/01/01 00:19:06 fetching corpus: 12036, signal 252046/257455 (executing program) 1970/01/01 00:19:09 fetching corpus: 12085, signal 252320/257455 (executing program) 1970/01/01 00:19:11 fetching corpus: 12135, signal 252646/257455 (executing program) 1970/01/01 00:19:16 fetching corpus: 12185, signal 252875/257455 (executing program) 1970/01/01 00:19:20 fetching corpus: 12235, signal 253136/257455 (executing program) 1970/01/01 00:19:24 fetching corpus: 12284, signal 253425/257455 (executing program) 1970/01/01 00:19:26 fetching corpus: 12331, signal 253721/257465 (executing program) 1970/01/01 00:19:29 fetching corpus: 12381, signal 254009/257465 (executing program) 1970/01/01 00:19:31 fetching corpus: 12431, signal 254289/257465 (executing program) 1970/01/01 00:19:34 fetching corpus: 12480, signal 254652/257465 (executing program) 1970/01/01 00:19:35 fetching corpus: 12523, signal 254877/257465 (executing program) 1970/01/01 00:19:36 fetching corpus: 12523, signal 254882/257465 (executing program) 1970/01/01 00:19:36 fetching corpus: 12523, signal 254882/257465 (executing program) 1970/01/01 00:22:11 starting 2 fuzzer processes 00:22:11 executing program 0: r0 = syz_io_uring_setup(0x76a9, &(0x7f0000000000), &(0x7f0000ffe000/0x1000)=nil, &(0x7f00000b0000)=nil, &(0x7f0000000140)=0x0, &(0x7f0000000080)=0x0) io_uring_enter(r0, 0x0, 0xe6a1, 0x1, 0x0, 0x0) syz_io_uring_submit(r1, r2, &(0x7f00000000c0)=@IORING_OP_FILES_UPDATE={0x14, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x0) io_uring_enter(r0, 0x1, 0x0, 0x0, 0x0, 0x0) 00:22:11 executing program 1: r0 = socket$l2tp6(0xa, 0x2, 0x73) sendmmsg$inet6(r0, &(0x7f00000068c0)=[{{&(0x7f0000006b00)={0xa, 0x0, 0x0, @local}, 0x1c, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x0) [ 1361.554232][ T2072] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1361.755674][ T2072] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1364.899818][ T2070] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1365.156883][ T2070] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1385.856995][ T2072] device hsr_slave_0 entered promiscuous mode [ 1386.000396][ T2072] device hsr_slave_1 entered promiscuous mode [ 1391.055548][ T2070] device hsr_slave_0 entered promiscuous mode [ 1391.243462][ T2070] device hsr_slave_1 entered promiscuous mode [ 1391.615939][ T2070] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 1391.623881][ T2070] Cannot create hsr debugfs directory [ 1395.695916][ C0] ================================================================== [ 1395.699399][ C0] BUG: KASAN: use-after-free in walk_stackframe+0x11c/0x260 [ 1395.700896][ C0] Read of size 8 at addr ffffaf800f987fa0 by task syz-executor.0/2070 [ 1395.702217][ C0] [ 1395.704071][ C0] CPU: 0 PID: 2070 Comm: syz-executor.0 Not tainted 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1395.706149][ C0] Hardware name: riscv-virtio,qemu (DT) [ 1395.707457][ C0] Call Trace: [ 1395.708929][ C0] [] dump_backtrace+0x2e/0x3c [ 1395.710501][ C0] [] show_stack+0x34/0x40 [ 1395.712004][ C0] [] dump_stack_lvl+0xe4/0x150 [ 1395.713571][ C0] [] print_address_description.constprop.0+0x2a/0x330 [ 1395.715289][ C0] [] kasan_report+0x184/0x1e0 [ 1395.716724][ C0] [] __asan_load8+0x6e/0x96 [ 1395.718871][ C0] [] walk_stackframe+0x11c/0x260 [ 1395.721251][ C0] [] arch_stack_walk+0x2c/0x3c [ 1395.722671][ C0] [] stack_trace_save+0xa6/0xd8 [ 1395.724290][ C0] [ 1395.725087][ C0] The buggy address belongs to the page: [ 1395.726669][ C0] page:ffffaf807aaabdf8 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8fb87 [ 1395.729626][ C0] flags: 0x8800000000(section=17|node=0|zone=0) [ 1395.732381][ C0] raw: 0000008800000000 0000000000000000 ffffaf807aaabe00 0000000000000000 [ 1395.733960][ C0] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 1395.735278][ C0] raw: 00000000000007ff [ 1395.736315][ C0] page dumped because: kasan: bad access detected [ 1395.737814][ C0] page_owner tracks the page as freed [ 1395.739596][ C0] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1999, ts 337331160900, free_ts 1391132954100 [ 1395.742591][ C0] __set_page_owner+0x48/0x136 [ 1395.743948][ C0] post_alloc_hook+0xd0/0x10a [ 1395.745141][ C0] get_page_from_freelist+0x8da/0x12d8 [ 1395.746432][ C0] __alloc_pages+0x150/0x3b6 [ 1395.747761][ C0] alloc_pages+0x132/0x2a6 [ 1395.749377][ C0] alloc_slab_page.constprop.0+0xc2/0xfa [ 1395.750542][ C0] new_slab+0x76/0x2cc [ 1395.751479][ C0] ___slab_alloc+0x56e/0x918 [ 1395.752491][ C0] __slab_alloc.constprop.0+0x50/0x8c [ 1395.753537][ C0] __kmalloc_node_track_caller+0x26c/0x362 [ 1395.754655][ C0] __alloc_skb+0xee/0x2e4 [ 1395.755776][ C0] __napi_alloc_skb+0x72/0x214 [ 1395.759241][ C0] page_to_skb+0x16e/0x70e [ 1395.760545][ C0] receive_buf+0xa20/0x3e50 [ 1395.761717][ C0] virtnet_poll+0x39c/0x986 [ 1395.762807][ C0] __napi_poll+0x7c/0x358 [ 1395.763938][ C0] page last free stack trace: [ 1395.764742][ C0] __reset_page_owner+0x4a/0xea [ 1395.765910][ C0] free_pcp_prepare+0x29c/0x45e [ 1395.767093][ C0] free_unref_page+0x6a/0x31e [ 1395.768662][ C0] __free_pages+0xe2/0x112 [ 1395.769977][ C0] __free_slab+0x122/0x27c [ 1395.771150][ C0] discard_slab+0x4c/0x7a [ 1395.772283][ C0] __slab_free+0x20a/0x29c [ 1395.773439][ C0] ___cache_free+0x17c/0x354 [ 1395.774703][ C0] qlist_free_all+0x7c/0x132 [ 1395.775808][ C0] kasan_quarantine_reduce+0x14c/0x1c8 [ 1395.776990][ C0] __kasan_slab_alloc+0x5c/0x98 [ 1395.778437][ C0] __kmalloc_track_caller+0x156/0x30e [ 1395.779833][ C0] kstrdup_const+0x84/0xba [ 1395.780859][ C0] __kernfs_new_node+0xc8/0x5f2 [ 1395.781943][ C0] kernfs_new_node+0x66/0xbe [ 1395.782866][ C0] kernfs_create_link+0x78/0x142 [ 1395.784035][ C0] [ 1395.784693][ C0] Memory state around the buggy address: [ 1395.786151][ C0] ffffaf800f987e80: 00 00 00 00 ff ff ff ff 00 00 00 00 00 00 00 00 [ 1395.787518][ C0] ffffaf800f987f00: 00 00 00 00 ff ff ff ff 00 00 00 00 00 00 00 00 [ 1395.789555][ C0] >ffffaf800f987f80: 00 00 00 00 ff ff ff ff 00 00 00 00 00 00 00 00 [ 1395.791327][ C0] ^ [ 1395.792277][ C0] ffffaf800f988000: f1 f1 f1 f1 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 [ 1395.793335][ C0] ffffaf800f988080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 1395.794479][ C0] ================================================================== [ 1395.795693][ C0] Disabling lock debugging due to kernel taint [ 1395.825619][ T2070] Kernel panic - not syncing: corrupted stack end detected inside scheduler [ 1395.827042][ T2070] CPU: 0 PID: 2070 Comm: syz-executor.0 Tainted: G B 5.17.0-rc1-syzkaller-00002-g0966d385830d #0 [ 1395.830194][ T2070] Hardware name: riscv-virtio,qemu (DT) [ 1395.831085][ T2070] Call Trace: [ 1395.831711][ T2070] [] dump_backtrace+0x2e/0x3c [ 1395.832923][ T2070] [] show_stack+0x34/0x40 [ 1395.834082][ T2070] [] dump_stack_lvl+0xe4/0x150 [ 1395.835375][ T2070] [] dump_stack+0x1c/0x24 [ 1395.836878][ T2070] [] panic+0x24a/0x634 [ 1395.838516][ T2070] [] schedule+0x0/0x14c [ 1395.839503][ T2070] [] preempt_schedule_irq+0x4a/0x13e [ 1395.840566][ T2070] [] resume_kernel+0x16/0x18 [ 1395.841761][ T2070] SMP: stopping secondary CPUs [ 1395.843970][ T2070] Rebooting in 86400 seconds.. VM DIAGNOSIS: 09:46:08 Registers: info registers vcpu 0 pc ffffffff831755ee mhartid 0000000000000000 mstatus 00000000000000a0 mip 00000000000000a0 mie 000000000000022a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff80475af4 sepc ffffffff831afd22 mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff831755ee x2/sp ffffaf800f987e40 x3/gp ffffffff85863ac0 x4/tp ffffaf800ecee100 x5/t0 ffffffff86bcb657 x6/t1 fffff5ef0b53910c x7/t2 0000000000000000 x8/s0 ffffaf800f987e70 x9/s1 ffffaf807aaabdf8 x10/a0 ffffffff8453a6b0 x11/a1 00000000000f0000 x12/a2 0000000000000504 x13/a3 ffffffff831755ee x14/a4 ffffaf800ecee100 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffaf805a9c8863 x18/s2 ffffffff8453a6b0 x19/s3 ffffffff8000a052 x20/s4 0000000000000000 x21/s5 ffffffff85863560 x22/s6 0000000000003fff x23/s7 ffffaf800f987f40 x24/s8 0000000000400000 x25/s9 ffffffffffffc000 x26/s10 ffffaf800f988020 x27/s11 0000000000000008 x28/t3 fffffffff3f3f300 x29/t4 fffff5ef0b53910c x30/t5 fffff5ef0b53910d x31/t6 ffffaf800f9879b8 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 pc ffffffff803288ec mhartid 0000000000000001 mstatus 00000000000000a0 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffff800055d4 mepc ffffffff8000f97e sepc 00007fffbd246264 mcause 0000000000000009 scause 0000000000000008 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffff80111f84 x2/sp ffffaf800735be50 x3/gp ffffffff85863ac0 x4/tp ffffaf800e6c1840 x5/t0 0000000000000003 x6/t1 3b47ef60c6577d00 x7/t2 ffffffffffffffff x8/s0 ffffaf800735be90 x9/s1 ffffaf805a9e4840 x10/a0 0000000000000000 x11/a1 ffffaf800e6c2840 x12/a2 1ffffffff0d834c5 x13/a3 ffffffff80112112 x14/a4 0000000000000000 x15/a5 ffffffffffffffff x16/a6 0000000000f00000 x17/a7 ffffffff831a2448 x18/s2 00007fffbd246264 x19/s3 0000000000000000 x20/s4 0000000000000008 x21/s5 00007fffbd2066c8 x22/s6 0000000000000010 x23/s7 0000000000004000 x24/s8 ffffffffffffffff x25/s9 0000000000000572 x26/s10 0000000000000001 x27/s11 0000000000000001 x28/t3 fffffffff3f3f300 x29/t4 ffffffff80112282 x30/t5 fffff5ef017594b1 x31/t6 00000000030a0756 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000